Tempest Blaze

A charged rush of wind rushes to a point you choose within range and then erupts into a cyclonic mini-storm. Each creature in a 20-foot-radius sphere centred on that point makes a Dexterity saving throw, taking 2d6+1 Bludgeoning damage, 2d6+1 Lightning damage and 2d6+1 Thunder damage on a failed save or half as much damage on a successful one.

Using a Higher-Level Spell Slot. The damage increases by 1d6 (caster chooses damage type) for each spell slot level above 3.